This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
Heal for 300 for each champion hit by Juggernaut.
Heal for 100 after activating Soul Harvest.
Reduce your damage taken by 25% for 3s after activating Soul Harvest.
Each Soul Fragment gathered Heals you for 60.
Reduce your damage taken by 9% for 3s after activating Ignition.
Reduce your damage taken by 40% while using Juggernaut.